CVE-2020-17518
Scores
EPSS
Percentile: 93.8%
CVSS
CVSS Score: 7.5/10
All CVSS Scores
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Privileges Required
None (N)
Describes the level of privileges an attacker must possess
User Interaction
None (N)
Captures the requirement for a human user participation
Scope
Unchanged (U)
Determines if a successful attack impacts components beyond the vulnerable component
Confidentiality Impact
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
High (H)
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
None (N)
Measures the impact to the availability of the impacted component
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
Vector Breakdown
CVSS (Common Vulnerability Scoring System) vector provides detailed metrics about vulnerability characteristics
CVSS
Attack Vector
Network (N)
Describes how the vulnerability is exploited
Attack Complexity
Low (L)
Describes the conditions beyond the attacker's control
Authentication
None (N)
Describes the level of privileges an attacker must possess
Confidentiality Impact
None (N)
Measures the impact to the confidentiality of information
Integrity Impact
Partial
Measures the impact to integrity of a successfully exploited vulnerability
Availability Impact
None (N)
Measures the impact to the availability of the impacted component
Description
Apache Flink 1.5.1 introduced a REST handler that allows you to write an uploaded file to an arbitrary location on the local file system, through a maliciously modified HTTP HEADER. The files can be written to any location accessible by Flink 1.5.1. All users should upgrade to Flink 1.11.3 or 1.12.0 if their Flink instance(s) are exposed. The issue was fixed in commit a5264a6f41524afe8ceadf1d8ddc8c80f323ebc4 from apache/flink:master.
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Sources
CWEs
Exploits
Exploit ID: CVE-2020-17518
Source: github-poc
URL: https://github.com/rakjong/Flink-CVE-2020-17518-getshell
Vulnerable Software (1)
Type: Configuration
Vendor: *
Product: flink
Operating System: * * *
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.11.3", "versionStartIncluding": "1.5.1", "vulnerable": true } ],...
{ "cpe_match": [ { "cpe23uri": "cpe:2.3:a:apache:flink:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.11.3", "versionStartIncluding": "1.5.1", "vulnerable": true } ], "operator": "OR"}
Source: nvd